A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning
Purpose. To compare cup-positioning accuracy in total hip arthroplasty (THA) with or without use of a Kirschner wire as a transverse-axis guide for pelvic alignment. Methods. Records of 18 men and 73 women (mean age, 60 years) who underwent primary THA with (n=49) or without (n=42) use of a Kirschne...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2016-04-01
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| Series: | Journal of Orthopaedic Surgery |
| Online Access: | https://doi.org/10.1177/230949901602400107 |
| _version_ | 1819226505693102080 |
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| author | Yasuhiro Ishidou Masataka Hirotsu Takao Setoguchi Satoshi Nagano Hironori Kakoi Masahiro Yokouchi Takuya Yamamoto Setsuro Komiya |
| author_facet | Yasuhiro Ishidou Masataka Hirotsu Takao Setoguchi Satoshi Nagano Hironori Kakoi Masahiro Yokouchi Takuya Yamamoto Setsuro Komiya |
| author_sort | Yasuhiro Ishidou |
| collection | DOAJ |
| description | Purpose. To compare cup-positioning accuracy in total hip arthroplasty (THA) with or without use of a Kirschner wire as a transverse-axis guide for pelvic alignment. Methods. Records of 18 men and 73 women (mean age, 60 years) who underwent primary THA with (n=49) or without (n=42) use of a Kirschner wire as a transverse-axis guide for pelvic alignment were reviewed. A 2.4-mm Kirschner wire as a transverse-axis guide was inserted to the anterior superior iliac spine and was parallel to a line linking the left and right anterior superior iliac spine. The safe zone for cup positioning was defined as 30° to 50° abduction and 10° to 30° anteversion. Of the 5 operative surgeons, 2 were classified as experienced (total surgical volume >300) and 3 as inexperienced (total surgical volume of <50). The proportion of patients with the cup in the safe zone was compared in patients with or without use of the transverse-axis guide and in experienced and inexperienced surgeons. Results. For inexperienced surgeons, the use of the transverse-axis guide significantly improved the proportion of patients with the cup in the safe zone from 90% to 100% for abduction, from 50% to 82.4% for anteversion, and from 40% to 82.4% for both. Patients with the cup inside or outside the safe zone were comparable in terms of body height, weight, BMI, subcutaneous fat thickness, incision length, and acetabular cup size. Conclusion. The use of the transverse-axis guide improved the accuracy of cup positioning by inexperienced surgeons. |
| first_indexed | 2024-12-23T10:26:34Z |
| format | Article |
| id | doaj.art-cc4df1736fb3437282c6283d37a6ec22 |
| institution | Directory Open Access Journal |
| issn | 2309-4990 |
| language | English |
| last_indexed | 2024-12-23T10:26:34Z |
| publishDate | 2016-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Orthopaedic Surgery |
| spelling | doaj.art-cc4df1736fb3437282c6283d37a6ec222022-12-21T17:50:33ZengSAGE PublishingJournal of Orthopaedic Surgery2309-49902016-04-012410.1177/230949901602400107A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup PositioningYasuhiro Ishidou0Masataka Hirotsu1Takao Setoguchi2Satoshi Nagano3Hironori Kakoi4Masahiro Yokouchi5Takuya Yamamoto6Setsuro Komiya7 Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan The Near-Future Locomotor Organ Medicine Creation Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan The Near-Future Locomotor Organ Medicine Creation Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, JapanPurpose. To compare cup-positioning accuracy in total hip arthroplasty (THA) with or without use of a Kirschner wire as a transverse-axis guide for pelvic alignment. Methods. Records of 18 men and 73 women (mean age, 60 years) who underwent primary THA with (n=49) or without (n=42) use of a Kirschner wire as a transverse-axis guide for pelvic alignment were reviewed. A 2.4-mm Kirschner wire as a transverse-axis guide was inserted to the anterior superior iliac spine and was parallel to a line linking the left and right anterior superior iliac spine. The safe zone for cup positioning was defined as 30° to 50° abduction and 10° to 30° anteversion. Of the 5 operative surgeons, 2 were classified as experienced (total surgical volume >300) and 3 as inexperienced (total surgical volume of <50). The proportion of patients with the cup in the safe zone was compared in patients with or without use of the transverse-axis guide and in experienced and inexperienced surgeons. Results. For inexperienced surgeons, the use of the transverse-axis guide significantly improved the proportion of patients with the cup in the safe zone from 90% to 100% for abduction, from 50% to 82.4% for anteversion, and from 40% to 82.4% for both. Patients with the cup inside or outside the safe zone were comparable in terms of body height, weight, BMI, subcutaneous fat thickness, incision length, and acetabular cup size. Conclusion. The use of the transverse-axis guide improved the accuracy of cup positioning by inexperienced surgeons.https://doi.org/10.1177/230949901602400107 |
| spellingShingle | Yasuhiro Ishidou Masataka Hirotsu Takao Setoguchi Satoshi Nagano Hironori Kakoi Masahiro Yokouchi Takuya Yamamoto Setsuro Komiya A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning Journal of Orthopaedic Surgery |
| title | A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning |
| title_full | A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning |
| title_fullStr | A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning |
| title_full_unstemmed | A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning |
| title_short | A Kirschner Wire as a Transverse-Axis Guide to Improve Acetabular Cup Positioning |
| title_sort | kirschner wire as a transverse axis guide to improve acetabular cup positioning |
| url | https://doi.org/10.1177/230949901602400107 |
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